直喷汽油机暖机过程中两次喷射比例对燃烧和排放的影响

doi:10.13229/j.cnki.jdxbgxb20170926

Abstract

Abstract:

A two-stage fuel injection warm up test was carried out on a GDI engine, and the influence of the fuel ratio of the two injections on the combustion and emission was studied in the warm-up process. The results show that with the coolant temperature rising from 30 ℃ to 80 ℃, the combustion and emission conditions are improved gradually that in different fuel ratio, the peak cylinder pressure is increased by 5%~10% , and HC emission is reduced by 32%~37%.With the fuel ratio changing from 9∶1 to 3∶1, during the coolant temperature raising from 30 °C to 80 °C, the peak cylinder pressure is increased by 16.68%, and the phase of peak cylinder pressure was 4° CA earlier, the peak heat release rate is increased by 2 J/°CA, HC emission is reduced by 15% on average, NO_x emission is increased gradually, the total concentration of particles is decreased gradually, particle size distribution is gradually shifted from the bimodal distribution of nuclear mode and accumulation mode to unimodal distribution of nuclear mode.

Key words: power machinery engineering, gasoline direct injection(GDI) engine, warm-up process, two-stage fuel injection, combustion, emission

CLC Number:

TK411

DONG Wei,SONG Bai-da,QIU Li-tao,SUN Hao-tian,SUN Ping,PU Chao-jie. Effect of fuel ratio of two injections on combustion and emissions in warm-up process of gasoline direct injection engine[J].Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1755-1761.

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References 17

[1]	夏淑敏, 邱先文, 赵新顺 , 等. 车用汽油机缸内直喷技术的研究现状与展望[J]. 农业机械学报, 2003,34(5):168-171. doi: 10.3969/j.issn.1000-1298.2003.05.048
	Xia Shu-min, Qiu Xian-wen, Zhao Xin-shun , et al. Survey of research situation on gasoline direct injection technology of automotive gasoline engine[J]. Transactions of the Chinese Society of Agricultural Machinery, 2003,34(5):168-171. doi: 10.3969/j.issn.1000-1298.2003.05.048
[2]	徐长建, 董伟, 于秀敏 , 等. 缸内直喷汽油机颗粒排放的热物理特性研究[J]. 车用发动机, 2015(4):70-75. doi: 10.3969/j.issn.1001-2222.2015.04.014
	Xu Chang-jian, Dong Wei, Yu Xiu-min , et al. Study on thermal physics characteristics of particle emissions from a GDI engine[J]. Vehicle Engine, 2015(4):70-75. doi: 10.3969/j.issn.1001-2222.2015.04.014
[3]	于凯 . 1.4T GDI汽油机排气微粒浓度及粒径分布特性研究[D]. 长春:吉林大学汽车工程学院, 2014.
	Yu Kai . Research on exhaust particle concentration and size distribution characteristics of the 1.4T GDI engine[D]. Changchun:College of Automotive Engineering,Jilin University, 2014.
[4]	胡军军, 黄震, 周龙保 , 等. 缸内直喷式汽油机燃烧特性分析[J]. 汽车工程, 2003,25(6):550-552. doi: 10.3321/j.issn:1000-680X.2003.06.006
	Hu Jun-jun, Huang Zhen, Zhou Long-bao , et al. An analysis on combustion characteristics of gasoline direct injection engine[J]. Automotive Engineering, 2003,25(6):550-552. doi: 10.3321/j.issn:1000-680X.2003.06.006
[5]	高剑, 蒋德明, 黄佐华 , 等. 缸内直喷 (GDI) 汽油机燃油喷雾和分层燃烧的数值研究[J]. 内燃机学报, 2005,23(4):297-306. doi: 10.3321/j.issn:1000-0909.2005.04.002
	Gao Jian, Jiang De-ming, Huang Zuo-hua , et al. Numerical study on spray and mixture stratified combustion in a direct injection gasoline engine[J]. Transactions of CSICE, 2005,23(4):297-306. doi: 10.3321/j.issn:1000-0909.2005.04.002
[6]	朱小慧, 陈鹏, 方俊华 . 燃料特性和工况对直喷汽油机微粒排放的影响[J]. 上海交通大学学报, 2017,51(1):69-75.
	Zhu Xiao-hui, Chen Peng, Fang Jun-hua . Effects of fuel properties and operation parameters on particle emission of gasoline direct injection engine[J]. Journal of Shanghai Jiaotong University, 2017,51(1):69-75.
[7]	张德满, 李舜酩, 李凯 , 等. 冷却水温度对柴油机污染物排放的影响[J]. 内燃机学报, 2010,28(6):510-513.
	Zhang De-man, Li Shun-ming, Li Kai , et al. Influence of coolant temperature on diesel engine emissions[J]. Transactions of CSICE, 2010,28(6):510-513.
[8]	Whelan I, Smith W, Timoney D , et al. The effect of engine operating conditions on engine-out particulate matter from a gasoline direct-injection engine during cold-start[C]//SAE Technical Paper, 2012-01-1711.
[9]	Kim J, Lee J S, Rew S H , et al. Comparative evaluation of engine control strategy on regulated emissions and nano-particle characteristics of LPG direct injection (LPDI) vehicle during the cold start and the hot phases in the FTP-75 cycle[C]//SAE Technical Paper, 2014-01-1232.
[10]	Ketterer J E, Cheng W K . On the nature of particulate emissions from DISI engines at cold-fast-idle[C]// SAE Technical Paper, 2014-01-1368.
[11]	Rodriguez J F, Cheng W K . Effect of operation strategy on first cycle CO, HC, and PM/PN emissions in a GDI engine[C]// SAE Technical Paper, 2015-01-0887.
[12]	Gumus M . Reducing cold-start emission from internal combustion engines by means of thermal energy storage system[J]. Applied Thermal Engineering, 2009,29(4):652-660. doi: 10.1016/j.applthermaleng.2008.03.044
[13]	刘震涛, 韩松, 尹旭 , 等. 发动机冷起动暖机过程改善措施的试验研究[J]. 汽车工程, 2012(7):596-600.
	Liu Zhen-tao, Han Song, Yin Xu , et al. An experimental study on the measures for improving cold start / warm-up process of engine[J].Automotive Engineering, 2012(7):596-600.
[14]	Rodriguez J F, Cheng W K . Effect of operation strategy on first cycle CO, HC, and PM/PN emissions in a GDI engine[C]// SAE Technical Paper, 2015-01-0887.
[15]	Dong W, Pu C, Sun Y, et al. Study on effects of multiple injection at intake stroke on combustion and emissions of GDI engine under warm up conditions [C]//Society of Automotive Engineers, Singapore, 2016: 217-227.
[16]	Montajir R M, Kawai T, Goto Y , et al. Thermal conditioning of exhaust gas: potential for stabilizing diesel nano-particles[C]// SAE Technical Paper, 2005-01-0187.
[17]	Kayes D, Hochgreb S . Investigation of the dilution process for measurement of particulate matter from spark-ignition engines[C]//SAE Technical Paper, 982601.

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结构参数	指标
缸数	4
缸径/mm	82.5
行程/mm	84.2
压缩比	9.6:1
[额定功率/转速]/[kW/(r·min^-1)]	118/(5000~6200)
[额定扭矩/转速]/[(N·m)/(r·min^-1)]	250/(1500~4200)
点火次序	1-3-4-2

参数	取值
喷油压力/MPa	8
点火正时/°CA BTDC	15
过量空气系数	0.9
一次喷油正时/°CA BTDC	290
二次喷油正时/°CA BTDC	120
喷油比例	9:1,7:1,5:1,3:1

Effect of fuel ratio of two injections on combustion and emissions in warm-up process of gasoline direct injection engine

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